On 2021-09-11, Chris Angelico <ros...@gmail.com> wrote: > Once you accept that "perfectly representable numbers" aren't > necessarily the ones you expect them to be, 64-bit floats become > adequate for a huge number of tasks. Even 32-bit floats are pretty > reliable for most tasks, although I suspect that there's little reason > to use them now - would be curious to see if there's any performance > benefit from restricting to the smaller format, given that most FPUs > probably have 80-bit or wider internal registers.
Not all CPUs have FPUs. Most of my development time is spent writing code for processors without FPUs. A soft implementation of 32-bit FP on a 32-bit processors is way, way faster than for 64-bit FP. Not to mention the fact that 32-bit FP data takes up half the memory of 64-bit. There are probably not many people using Python on 32-bit CPUs w/o FP. -- Grant -- https://mail.python.org/mailman/listinfo/python-list
